Difference between 2 Stroke Diesel Engine and 4 Stroke Diesel Engine
The 2 Stroke Diesel Engine and the 4 Stroke Diesel Engine are both vital types of engines used in various machines.
The main difference between a 2 Stroke Diesel Engine and a 4 Stroke Diesel Engine is that the former completes its power cycle with two piston strokes (one rotation of the crankshaft) while the latter requires four piston strokes (two complete rotations of the crankshaft).
Before we move to the differences, let’s understand what are 2 Stroke Diesel Engine and 4 Stroke Diesel Engine:
- 2 Stroke Diesel Engine: A 2 Stroke Diesel Engine is a type of engine that completes a power cycle in two movements of the piston. In this engine, the steps of intake, compression, combustion, and exhaust happen in just two strokes. It’s quick and powerful.
- 4 Stroke Diesel Engine: A 4 Stroke Diesel Engine is another type of engine, but it finishes its power cycle in four piston movements. In this type, intake, compression, combustion, and exhaust each get their own stroke. It’s more efficient and cleaner, but not as quick as the 2 stroke engine.
Now, let’s move to 2 Stroke Diesel Engine vs 4 Stroke Diesel Engine:
Major differences between 2 Stroke Diesel Engine and 4 Stroke Diesel Engine
| 2 Stroke Diesel Engine | 4 Stroke Diesel Engine |
|---|---|
| A 2 Stroke Diesel Engine completes one operating cycle in two strokes of the piston or one revolution of the crankshaft, | A 4 Stroke Diesel Engine completes one operating cycle in four strokes of the piston or two revolutions of the crankshaft. |
| The 2 Stroke Diesel Engine has ports for intake and exhaust, | The 4 Stroke Diesel Engine uses valves for these functions. |
| The 2 Stroke Diesel Engine generally produces more power, | The 4 Stroke Diesel Engine is known for better fuel efficiency. |
| In a 2 Stroke Diesel Engine, lubricating oil is mixed with fuel, | In a 4 Stroke Diesel Engine, a separate lubrication system is used. |
| The 2 Stroke Diesel Engine tends to be noisier and emit more exhaust emissions, | The 4 Stroke Diesel Engine is quieter and more environmentally friendly. |
That’s it.
Note that sometimes, the question might also be asked as “distinguish between 2 Stroke Diesel Engine and 4 Stroke Diesel Engine”.
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Final words
So, while they may seem similar, the 2 Stroke and 4 Stroke Diesel Engines have distinct operational differences that influence their efficiency and application.
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